Full support via phone, email and online accounts
A Dedicated Account Manager and access to our Sample Size Experts
Access to the nQuery Knowledge Base to find hours of training videos & tutorials
Gamma Regression sample size for Incident Rates
Increase sample size if pre-study variance is underestimate compared to interim value
Define whether an interim analysis looks “promising”
Stop early for efficacy / futility
A frequentist method giving the probability of achieving statistical significance at the end of a study given the data obtained up until the interim analysis
A Bayesian method of averaging the conditional power over the posterior distribution of effect size
Partner with nQuery to design custom tools to solve all your sample size requirements
Regular onsite training to enable your team to remain proficient and stay current with latest regulatory guidelines
Immediate access to Biostatisticians and Sample Size Experts
In 2017, 90% of organisations with clinical trials approved by the FDA used nQuery for sample size and power calculation